FC 300
Bit (Hex)
Unit diag-
nose bit
Warning word (Par.
16-92)
Alarm no.
00000001
112
Brake check
28
00000002
113
Power card over temper-
ature
29
00000004
114
Earth fault
14
00000008
115
Control card over tem-
perature
65
00000010
116
Control word timeout
18
00000020
117
Over current
13
00000040
118
Torque limit
12
00000080
119
Motor thermistor over
temp.
11
00000100
104
Motor ETR over temper-
ature
10
00000200
105
Inverter overloaded
9
00000400
106
DC link under voltage
8
00000800
107
DC link over voltage
7
00001000
108
DC link voltage low
6
00002000
109
DC link voltage high
5
00004000
110
Mains phase loss
4
00008000
111
No motor
3
00010000
96
Live zero error
2
00020000
97
10 V low
1
00040000
98
Brake resistor power
limit
26
00080000
99
Brake resistor short cir-
cuit
25
00100000
100
Brake chopper fault
27
00200000
101
Speed limit
49
00400000
102
Fieldbus comm. fault
34
00800000
103
24 V supply fault
47
01000000
88
Mains failure
36
02000000
89
Current limit
59
04000000
90
Low temperature
66
08000000
91
Voltage limit
64
10000000
92
Encoder loss
61
20000000
93
Output frequency limit
62
40000000
94
Unused
-
80000000
95
Warning word 2 (ext.
stat. word)
-
FC 300
Bit (Hex)
Comm. option STW (Par. 16-94)
00000001
Ramping
00000002
AMA tuning
00000004
Start CW/CCW
00000008
Slow down
00000010
Catch up
00000020
Feedback high
00000040
Feedback low
00000080
Output current high
00000100
Output current low
00000200
Output frequency high
00000400
Output frequency low
00000800
Brake check OK
00001000
Braking max.
00002000
Braking
00004000
Out of speed range
00008000
OVC active
00010000
AC brake
00020000
KTY warm
00040000
Fans warm
00080000
Unused
00100000
Unused
00200000
Unused
00400000
Unused
00800000
Unused
01000000
Unused
02000000
Unused
04000000
Unused
08000000
Unused
10000000
Unused
20000000
Unused
40000000
Unused
80000000
Unused
8.1.1. Warning and Alarm Messages
There is a clear distinction between alarms and warnings. When there is an alarm, the frequency converter will enter a fault condition. After the cause
for the alarm has been cleared, the master will have to acknowledge the alarm message before the frequency converter can start operating again. A
warning, on the other hand, may come when a warning condition appears, then disappear when conditions return to normal, without interfering with the
process.
Warnings
Warnings within the frequency converter are represented by a single bit within a warning word. A warning word is always an active parameter. Bit status
FALSE [0] means no warning, while bit status TRUE [1] means warning. Any bit change in the warning word will be notified by a change of bit 7 in the
status word.
Alarms
Following an alarm message the frequency converter will enter Fault condition. Only after the fault has been alleviated and the master has acknowledged
the alarm message by setting bit 7 in the control word, will the frequency converter resume operation. Alarms within the frequency converter are
represented by a single bit within an alarm word. An alarm word is always an action parameter. Bit status FALSE [0] means no fault, while bit status
TRUE [1] means fault.
8. Troubleshooting
FC 300 Interbus Operating Instructions
42
MG.33.H3.02 - VLT is a registered Danfoss trademark
8